Crater Erathosthenes

Sketching and Materials
For this sketch I used: Black Canson sketching paper, 8”x10”, white and black Conte’ pastel pencils, blending stumps and small brushes. Image cut and pasted to black background using Gimp2.8.
Telescope: 10 inch f/ 5.7 Dobsonian and 6 mm eyepiece 241x on an equatorial platform
Date: 04-14-2019 03:05-04:00 UT
Temperature: 21°C (70°F)
Some high thin clouds, calm
Seeing: Antoniadi II and at times I
Co longitude: 18.4°
Lunation: 8.5 days
Illumination: 62.4 %
Frank McCabe